Roseland, NJ has a population of 5,875 and is the 5,830th largest city in the United States. The population density is 1,624 per sq mi which is 162293% higher than the New Jersey average and 1692% higher than the national average. The median age in Roseland is 48 which is approximately 21% higher than the New Jersey average of 40. In Roseland, 69% of the population over 15 years of age are married, 81% speak English and 7% speak Spanish. 65% of Roseland residents were born in New Jersey, 20% were born out of state, 0% were born outside of the United States and 14% were foreign born.